Abstract :
Tools and techniques for digital identity management represent an important technology for enabling transactions and interactions across the Internet. Because identity information is often privacy sensitive, it is important that suitable privacy and security techniques be adopted for its protection. In this paper we discuss relevant concepts and issues and survey an approach based on the notion of multifactor verification. Such approach, developed for federated digital identity management systems, is based on privacy preserving cryptographic protocols and thus achieves high assurance privacy. In the paper we also discuss relevant open research issues, including interoperability, and protocols to support sophisticated policies for identity verification.
